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Finding the Fourth Proportional to 173,719.40, 260,724.90 and 85,048.70

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Solution

The fourth proportional to 173,719.40, 260,724.90 and 85,048.70 is: 127,644.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,719.40 : 260,724.90 = 85,048.70 : x
  2. Step 2: Convert to fraction form
    173,719.40/260,724.90 = 85,048.70/x
  3. Step 3: Cross multiply
    173,719.40x = 260,724.90 × 85,048.70
  4. Step 4: Simplify right side
    173,719.40x = 22,174,313,802.63
  5. Step 5: Solve for x
    x = 22,174,313,802.63/173,719.40
  6. Step 6: Final answer
    x = 127,644.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.